usnic: correctly check failed allocation

Since ib_alloc_device returns allocated memory address, not error,
it should be checked as IS_NULL, not IS_ERR_OR_NULL.

Signed-off-by: Insu Yun <wuninsu@gmail.com>
Reviewed-by: Dave Goodell <dgoodell@cisco.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c
index 0c15bd8..565c881 100644 (file)
--- a/drivers/infiniband/hw/usnic/usnic_ib_main.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c
@@ -343,16 +343,15 @@ static void *usnic_ib_device_add(struct pci_dev *dev)
        netdev = pci_get_drvdata(dev);
 
        us_ibdev = (struct usnic_ib_dev *)ib_alloc_device(sizeof(*us_ibdev));
-       if (IS_ERR_OR_NULL(us_ibdev)) {
+       if (!us_ibdev) {
                usnic_err("Device %s context alloc failed\n",
                                netdev_name(pci_get_drvdata(dev)));
-               return ERR_PTR(us_ibdev ? PTR_ERR(us_ibdev) : -EFAULT);
+               return ERR_PTR(-EFAULT);
        }
 
        us_ibdev->ufdev = usnic_fwd_dev_alloc(dev);
-       if (IS_ERR_OR_NULL(us_ibdev->ufdev)) {
-               usnic_err("Failed to alloc ufdev for %s with err %ld\n",
-                               pci_name(dev), PTR_ERR(us_ibdev->ufdev));
+       if (!us_ibdev->ufdev) {
+               usnic_err("Failed to alloc ufdev for %s\n", pci_name(dev));
                goto err_dealloc;
        }